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frog

Go implementation of the sensor agent on raspberry pi publishing values via MQTT

re-implementation of sensor agent with golang

currently supports

  • windvane
  • anemometer
  • rain sensor

including custom implementation of ads1115 ADC i²c driver

dependencies:

  • golang.org/x/exp/io/i2c for i²c support
  • github.com/brian-armstrong/gpio for gpio support on raspberry pi - including native interrupts
  • github.com/eclipse/paho.mqtt.golang for mqtt support
  • github.com/d2r2/go-bsbmp for BMP280 sensor support

raspi config

/etc/systemd/system/frog.service

(replace mqtt user, host and pass with appropriate values)

[Unit]
Description=FROG
Wants=network-online.target
After=network-online.target
RestartSec=5
StartLimitBurst=5
StartLimitIntervalSec=10

[Service]
ExecStart=/home/pi/frog $MQTT_HOST $MQTT_USER $MQTT_PASS
Restart=on-failure

[Install]
WantedBy=multi-user.target

/etc/systemd/system/ssh-tunnel.service

(reverse tunnel from 2222 to raspi:22 for maintenance)

[Unit]
Description=SSH Tunnel
Wants=network-online.target
After=network-online.target
RestartSec=5
StartLimitBurst=5
StartLimitIntervalSec=10

[Service]
Environment="AUTOSSH_GATETIME=0"
ExecStart=/usr/bin/autossh -M 0 -o "ServerAliveInterval 10" -o "ServerAliveCountMax 3" -R 2222:localhost:22 -i /root/.ssh/id_rsa -v -N root@195.201.28.189
Restart=on-failure

[Install]
WantedBy=multi-user.target